Mechanical feeding device.



' PATENTED APR. 26, 1904.

'1. L. & T. J. STURTEVANT. MEGHANIGAL FEEDING DEVICE.

APPLICATION FILED JAN. 9, 1904. HO MODEL. 2 SKEETS-SHEET 1- 9 Z If I I n1 i U 3,3 7fi'zfizw' 6A? M 623??? %J M d W m: canals PETERS w. mo'rouma.WASKXMGYOI, o c.

No. 758,119. 7 k PATENTED APR. '26-,1904.

T. L. & T. J. STURTEVANT. MECHANICAL FEEDING DEVICE.

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Patented April 26, 1904.

UNITED STATES PATENT OFFICE;

THOMAS LEGGETTVSTURTEVANT, OF QUINCY, AND THOMAS J. STURTE- VANT, OFWELLESLEY, MASSAOHUSETTS.' I

MECHANICAL FEEDING- DEVICE.

SPECIFICATION forming part of Letters Patent No 758,119, dated April 26,1904. Application filed January 9, 1904. Serial No. 188,290. (No model.)7

To all whom it may concern:

Be it known that W6,THOMAS Lneen'r'r STUR- TEVANT, residing at Quincy,and THOMAS J. I

STURTEVANT, residing at Wellesley, in the county of Norfolk and State ofMassachusetts, citizens of the United States, have invented certain newand useful Improvements in Mechanical Feeding Devices, of whichthe'following is a specification, reference being had therein to theaccompanying drawings.

This invention relates to an improved automatic device for feedingmaterials to be pulverized, screened, or otherwise acted on mechanically to machines of various kinds; and the invention comprisescertain improvements on the feeding device shown and described in ourPatent No. 592,698, granted July 10, 1894.

In the accompanying drawings, Figure 1 is a side view of the improvedfeeding device with the internal construction indicated in' dottedlines, and Fig. 2 is a perspective view of the same on a somewhatsmaller scale than Fig. 1. Fig. 3 is a vertical sectional view of thefeeding device and its operating mechanlSm.

Referring to the drawings, 12 denotes a casing adapted to serve as ahopper and also as a housing for the internal parts of the feedingmechanism. The casing 12 is provided with said pan or chute is supportedby the upper arm of a bell-crank rocker 21, pivotally mounted in a lug22 of the casing, and the lower arm of which is provided with a wheel orroller 23, held by a spring 2 engaging the upper end of theswinging panor chute against the eccentric 16. The stress of the spring 24 may beregulated or varied bya set-screw 25, tapped in a lug in the casing 12and bearing against a follower 26 at one end of said spring,

and the said set-screw may be secured in any desired position ofadjustment by a locknut 27. I

The output of the feeding device may be regulated by a gravitatingswinging gate 28, provided with an arm 29, pivoted at 30 to the casing12, and having a shorter arm 31, engaged by a regulating-screw 32,tapped in a lug in the said casing 12', and provided with a set-nut 33,by which it may be held in any desired position of adjustment.

The casing 12 is preferably provided with a removable end plate or cover3 1 for an opening, through which access may be had to the interiorofthe casing at the feed-gate end thereof.

From the foregoing it will be understood that the improved feedingdevice is self-contained, in that it is provided with a drivingshaftmounted on the casing thereof and provided with an eccentric from whichand a coacting spring the swinging feed-pan can be operated, the feederas a whole being adapted for attachment to any crushing, pulverizing,

screening, or other machine suitably constructed for its reception. Bymounting the swinging feed pan or chute on a link and an operatingrocker-arm, as shown, the said swinging pan or chute will be stronglysupported on nearly frictionless bearings, so that the wear incident tothe operation of the device will be reduced to a minimum, while theoutput of the feeder may be regulated to a nicety by the adjustablegravitating feedgate 28.

Having thus described our invention, we claimand desire to secure byLetters Patent- 1. In a feeding device, the combination with aninclosing casing adapted to serve as a hop- I vided with an eccentric13, and a spring 24 acting on said pan or chute and serving to hold saidroller in contact with said eccentric.

2. In a feeding device, the combination with an inclosing casing adaptedto serve as a hopper, of a rotating shaft mounted on said casing andprovided with a driving-pulley and an eccentric, a swinging pan or chutebelow the hopper portion of said casing, a link, 20, movably supportingone end of said pan or chute, a bell-crank rocker, 21, the upper arm ofwhich is pivotally connected with said pan or chute and the lower arm ofwhich is provided with a roller 28, a driving-shaft 14 provided with aneccentric 12, a spring 24: acting on said pan or chute and serving tohold said roller in contact with said eccentric, and an adjustablefeed-gate for regulating the output of the said feeding device.

3. The combination with the casing 12 the upper portion of which isadapted to serve as a hopper, of asWinging pan or chute mounted in thesaid casing below the hopper portion thereof, a link by which one end'ofthe said pan or chute is supported, a bell-crank rocker, 21, the upperarm of which is pivotally connected with said pan or chute and the lowerarm of which is provided with a roller, 23, a driving-shaft providedwith an eccentric and a spring bearing against one end of said pan orchute and serving to hold said roller against said eccentric, and meansfor regulating the stress of said spring.

In testimony whereof we afiix our signatures in presence of twowitnesses.

THOMAS LEGGETT STURTEVANT. THOMAS J. STURTEVANT. Witnesses:

W. H. ELLIS, RUBER'r M. GAY.

